Boiler.



PATENTED OCT. 3, 1905.

J. H. LAMBRIX.

BOILER.

APPLICATION FILED MAR. 24. 1905.

2 SHEETS-SHEET 2.

UNITED STATES PATENT oEEIoE.

BOILER.

Specification of Letters Patent.

Patented Oct. 3, 1905.

Application filed March 24, 1905- Serial No. 251,734.

To (all whom, it may concern:

Be it known that I, J OSEPH H. LAMBRIX, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented a new and useful Boiler, of which the following is a specification.

My invention relates to improvements in boilers, and more particularly to that class called boilers.

The object of this invention is a boiler having means for permitting ready access to all of its parts, so that repairs are reduced to a mlnimum.

Among other objects are to provide free circulation of heat in the boiler, to permit the tubes being removed without taking the boiler apart, to utilize a maximum amount of heat from the fuel, and to reduce the waste-heat radiation to a minimum.

In the accompanying drawings, forming part of this specification, Figure l is a vertical sectional view of my invention. Fig. 2 is a plan view, shown partly in section; and Fig. 3 is a section of Fig. 1, taken on the line X X.

In the drawings let A represent an outer shell with the upper portion 2 larger than the lower portion for the purposes hereinafter described. A smoke-chamber 3 passes around the smaller part of the shell immediately below its upper portion and is formed with two or more smoke-outlets A. An inner shell B or fire-box is substantially a hollow cylinder spaced throughout its length from the outer shell and forming a water-jacket 5. The inner shell is flanged out at or near its lower end, as indicated at 6, so as to leave an ashpit C below. The upper end of the inner shell is fastened to a flanged plate 7, which connects with the outer shell. A circular dome D, having a steam or hot-water outlet 19, is supported above and is less in diameter upright water-tube or steam than the inner shell to permit the draft to pass between them. In the lower end 9 of the steam-dome are connected a number of water-tubes 8, which are substantially vertical and near their lower ends curved outward and connected to the side of the fire-box shell. The ends of these water-tubes are expanded, rolled, and beaded down to form tight joints.

Coincident with the lower curved ends of the water-tubes and in the outer shell are screw-plugs 10, which when removed provide access for cleaning the water-tubes or repairing their lower ends. The top of the dome has a manhole-plate 11, (of ordinary construction,) which is usually large enough to allow a man to pass through for making repairs and cleaning said tubes. The shape and position of the water-tubes and the screw-plugs and steam-dome allow a defective tube to be removed without molesting any of the other tubes.

Running downward in the water jacket or space between the upper ends of the inner and outer shells are a number of vertical fire-flues 12, which are connected to the flanged plate 7 and the shoulder 13 by expanding, rolling, and beading down their ends. These fire-flues are arranged in a circle, as shown in Fig. 3, around the fire-box. The lower ends of the flre-flues thus connect with the space above the fire-box and the smoke-chamber 3. A firegrate E is supported at or near the lower end of the fire-box B by means of brackets 14, and draft is admitted below the fire-grate through the ash-pit door 15. This draft passes upward, circulates around the water tubes, passes over the upper end of the fire-box, down the flues 12, and out through the smokechamber.

A number of water-circulating pipes 16 radiate from the steam-dome, pass through the upper end of the outer shell, and connect with the water-space 5 immediately below the flanged plate 7. These pipes are provided with unions 17 outside of the boiler for the purpose of allowing the parts to be easily taken apart and removed.

Water is fed into the boiler through a pipe 18, which is connected with the water-jacket 5 near the lower end of the fire-box and is free to circulate up the water-tubes, through the steam-dome and radiating pipes 16, and down the water-space 5 around the flues 12.

The inner and outer shells are supported and braced by means of stay-bolts 20, and fuel is passed onto the grate E through the doorway, as shown. The upper end of the outer shell is provided with a cover 22, which rests upon the radiating pipes 16 and inclines upward and closely fits the outer surface of the steam-dome. By removing this cover the flre-flues may be cleaned or their upper ends repaired.

and that the details of construction shown may be modified without departing from the spirit of this invention, and 1 do not wish to confine myself to the exact construction described.

Having described my invention, what I claim as new, and desire to protect by Letters Patent is 1. A boiler consistingof an outershell, having its upper portion larger than its lower portion, a smoke-chamber below said upper portion and around said outer shell, an inner shell spaced from and connected at its upper and lower ends with said outer shell to form a tire-box within, a water-jacket and an ashpit near the bottom of the boiler, a steamdome supported above said inner shell and having a steam or hot-water outlet, a manholeplate in said steam-dome, a plurality of watertubes in the [ire-box and connected at their upper ends with said steam-dome and curved out and connected at their lower ends with the water-jacket, removable plugs'in the outer shell coincident with the lower ends of said water-tubes, a plurality of vertical fire-fines arranged in a circle in the upper portion of the water-jacket and communicating with the smoke-chamber, a plurality of water-circulating pipes radiating from the steam-dome, passing out of the boiler and connected with the upper portion of the water-jacket, unions in said circulating-pipes outside of said boiler, means for feeding water into the lower portion of said jacket, a fire-grate near the lower portion of the tire-box, means for bracing said. inner and outer shells, and a cover on the upper end of said outer shell and around said steam-dome.

2. A boiler comprising, in combination, an outer shell having its upper portion larger than its lower portion, an inner shell spaced from and connected at its upper and lower ends with said outer shell to form a waterjacket and fire-box, a steam-dome. having an outlet and supported above said inner shell, a plurality of water-tubes in said fire-box and connected at their upper ends with said steamdome and at their lower ends with said waterjacket, a plurality of vertical fire-fines in the upper portion of the water-jacket, a smokechamber below the lower ends of said tireflues, a plurality of water-circulating pipes leading from said steam-dome and connected with the upper portion of the water-jacket, and means for feeding water into the lower portion of said jacket.

3. A boiler comprising, in combination, an outer shell having its upper portion larger than its lower portion, an inner shell spaced from and connected at its upper and lower ends with said outer shell to form a waterjacket and fire-box and having a water-feed inlet, a dome having an outlet and supported above said inner shell, a plurality of watertubes in said lire-box and connected at their upper ends with said dome and at their lower ends with said jacket, removable plugs in said outer shell coincident with the lower ends of said water-tubes, a plurality of fireflues passing through the upper portion of said water-jacket, means for conveying smoke and gases from the lower ends of said lireflues, and a plurality of water connections between said dome and the upper end of said jacket.

4:. A boiler comprising, in combination, outer and inner shells connected together at or near their upper and lower ends to form a water-jacket and having a water-supply inlet, said outer shell being larger at its upper end than at its lower end to form an enlarged space within, fire-flues passing through said enlarged space, a dome near the upper end of said inner shell and having a steam or hotwater outlet, a connection between said outer shell and dome to close the space intervening, a smoke-outlet connected with said lines, and a plurality of water-tubes in said inner shell having their ends connected with said dome and water-jacket.

5. A boiler comprising outer and inner shells connected together at or near their ends to form a water-jacket and a fire-box within said inner shell, said outer shell being larger at its upper end than at its lower end to form an enlarged space within, fire-fines passing vertically through said enlarged space in said water-jacket, a smoke-chamber below the lower ends of said fire-fines having an outlet, a dome above said fire-box and connected to said outer shell to form a draft communication between said fire-box and fireflues, watertubes connected with said dome and waterjacket, and a communication between said dome and the upper end of said jacket.

6. A boiler comprising, in combination, outer and inner shells set apart and connected together near their ends to form a waterjacket and a fire-box Within said inner shell, said outer shell being larger at its upper end than atits lower end to form anenlarged space within, fire-fines passing vertically through said enlarged space in said water-jacket, a smoke-chamber below the lower ends of said fire-fines, having an outlet, a dome' above said fire-box, a cover above said inner shell and spaced therefrom to form a draft communication between said fire-box and fire-fines in said fire-box and connected with said dome and water-jacket, water-circulating pipes passing through the space between said cover and the upper end of said inner shell and connected with said dome and the enlarged space in said water-jacket, and unions in said water-circulating pipes outside of said boiler.

7. A boiler comprising, in combination, outer and inner shells connected together near their ends to form a water-jacket and a firebox within said inner shell, said outer shell being larger at its upper end than at its lower end to form an enlarged space within said IIO jacket, fire-fiues passing vertically through said enlarged space in said water-jacket, a smoke-chamber below the lower ends of said fire-flues having an outlet, a plurality of Watertubes in said fire-box having their lower ends connected near the lower portion of said waterjacket, means for connecting the upper ends of said fire-flues with the enlarged portion of said water-jacket, and inlet and outlet connections to be coupled with an external heating system, for the purposes specified.

8. A boiler comprising, in combination, outer and inner shells A and B, spaced apart and connected at or near their upper and lower ends to form a water-jacket within and having an inlet passage-way 18, said inner shell having an enlarged upper portion 2, a plurality of fire-fines 12 passing vertically through the space between said enlarged upper portion of said outer shell and said inner shell, a smoke-chamber 3 having outlets and connected with the lower ends of said firefiues, a dome D above said inner shell and having an outlet passage-way 19, a plurality of water-tubes 8 connected with said dome and with said jacket below its enlarged portion, removable plugs 10 in the outer shell coincident with the lower ends of said water-tubes, staybolts 20 between said outer and inner shells, a plurality of water-circulating pipes connected with said dome, passing through said outer shell and connected with the enlarged portion of said jacket, unions 17 connected with said water-circulating pipes outside of said boiler, a removable cover 22 on the upper end of said outer shell and closely fitting around said dome, and a fire-grate E near the lower end of said inner shell, for the purposes specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOSEPH H. LAMBRIX.

WVitnesses:

E. M. BOESEL, F. G. BRADBURY. 

